How to Complete a Claim–Evidence–Reasoning (CER) Diagram | Science Literacy Lesson
Differentiated Practice with Scientific Explanations and Evidence.
This lesson builds student proficiency with the Claim–Evidence–Reasoning (CER) framework through structured practice, reading support tools, and differentiated task options. Students learn to distinguish claims, evidence, and reasoning and then apply those distinctions to increasingly complex scientific texts.
Students begin in a digital classroom space that includes optional reading supports such as translation tools, simplified vocabulary, text-to-speech, and a science dictionary. These tools are available to reduce language barriers while keeping the cognitive task focused on scientific reasoning.
Students then:
study the components of CER and how each functions in an argument
practice matching claims, evidence, and reasoning using short experimental scenarios
complete differentiated CER tables
select an article at an appropriate difficulty level
write a concise summary of the article
construct a full CER diagram based on the article’s content
identify and define key scientific vocabulary from the text
Across all pathways, students are expected to:
distinguish observation from explanation
select appropriate evidence to support a claim
explain how evidence justifies that claim
The lesson is designed to support:
explicit instruction in scientific argumentation
gradual release from guided practice to independent CER construction
differentiation without changing learning goals
integration of literacy skills within science content
It functions well as:
an introductory CER lesson
a scaffolded practice activity
or a reinforcement lesson within a science literacy or inquiry sequence
To preview this lesson, click here.
NGSS Alignment (High School):
none- this lesson supports SEPs and CCCs
NGSS Alignment (Middle School):
none- this lesson supports SEPs and CCCs
Science & Engineering Practices (SEPs):
Constructing Explanations
Engaging in Argument from Evidence
Obtaining, Evaluating, and Communicating Information
Crosscutting Concepts (CCCs):
Structure and Function
Cause and Effect
Systems and System Models
Patterns
Common Core (Literacy in Science):
CCSS.ELA-LITERACY.RST.6-8.1 / RST.9-10.1 / RST.11-12.1
CCSS.ELA-LITERACY.RST.6-8.7 / RST.9-10.7 / RST.11-12.7
CCSS.ELA-LITERACY.WHST.6-8.1 / WHST.9-10.1 / WHST.11-12.1
CCSS.ELA-LITERACY.WHST.6-8.2 / WHST.9-10.2 / WHST.11-12.2
CCSS.ELA-LITERACY.WHST.6-8.9/WHST.9-10.9 / WHST.11-12.9
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Differentiated Practice with Scientific Explanations and Evidence.
This lesson builds student proficiency with the Claim–Evidence–Reasoning (CER) framework through structured practice, reading support tools, and differentiated task options. Students learn to distinguish claims, evidence, and reasoning and then apply those distinctions to increasingly complex scientific texts.
Students begin in a digital classroom space that includes optional reading supports such as translation tools, simplified vocabulary, text-to-speech, and a science dictionary. These tools are available to reduce language barriers while keeping the cognitive task focused on scientific reasoning.
Students then:
study the components of CER and how each functions in an argument
practice matching claims, evidence, and reasoning using short experimental scenarios
complete differentiated CER tables
select an article at an appropriate difficulty level
write a concise summary of the article
construct a full CER diagram based on the article’s content
identify and define key scientific vocabulary from the text
Across all pathways, students are expected to:
distinguish observation from explanation
select appropriate evidence to support a claim
explain how evidence justifies that claim
The lesson is designed to support:
explicit instruction in scientific argumentation
gradual release from guided practice to independent CER construction
differentiation without changing learning goals
integration of literacy skills within science content
It functions well as:
an introductory CER lesson
a scaffolded practice activity
or a reinforcement lesson within a science literacy or inquiry sequence
To preview this lesson, click here.
NGSS Alignment (High School):
none- this lesson supports SEPs and CCCs
NGSS Alignment (Middle School):
none- this lesson supports SEPs and CCCs
Science & Engineering Practices (SEPs):
Constructing Explanations
Engaging in Argument from Evidence
Obtaining, Evaluating, and Communicating Information
Crosscutting Concepts (CCCs):
Structure and Function
Cause and Effect
Systems and System Models
Patterns
Common Core (Literacy in Science):
CCSS.ELA-LITERACY.RST.6-8.1 / RST.9-10.1 / RST.11-12.1
CCSS.ELA-LITERACY.RST.6-8.7 / RST.9-10.7 / RST.11-12.7
CCSS.ELA-LITERACY.WHST.6-8.1 / WHST.9-10.1 / WHST.11-12.1
CCSS.ELA-LITERACY.WHST.6-8.2 / WHST.9-10.2 / WHST.11-12.2
CCSS.ELA-LITERACY.WHST.6-8.9/WHST.9-10.9 / WHST.11-12.9